my $mech = new WWW::Mechanize(
		max_redirect => 20,
		autocheck => 1,
		onerror => \&onFetchError,
		onwarn => \&onFetchWarn
);

# i cannot use max_size because i get a 403
# $mech->max_size("10240");
# so here is what i came up with:
$mech->get($myUrl,":content_cb"=> \&myCallback);

sub myCallback{
	my ($data, $response, $protocol) = @_;
	my $totalData .= $data;
	if( (length($totalData ) / 1024) > 10 ){
		#I want to stop the transfer now
		#but it's not working this way...
		$mech = undef;
	}
}